．Therearefivepairs,butI’matalo

．There are five pairs______, but I’m at a loss which to buy．
A．to be chosen B to choose from C . to choose D for choosing

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A．combining

B．combined

C．to combine

D．having combined

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A．has been preparing	B．had been preparing
C．has prepared	D．prepares

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—Was the test you took yesterday easy?
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A．Something

B．Everything

C．Nothing

D．Anything

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A．so does proper nutrition	B．so proper nutrition does
C．so proper nutrition can	D．so can proper nutrition

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—Why did you leave without a word of warning to John?
—But what otherwise? He never listens to me.

A．could I have done	B．would I do
C．must I have done	D．should I do

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